Nintendo kicked off their Black Friday eShop deals yesterday, but that's not the full list of goodies on sale on 3DS and Wii U. In addition to Nintendo's official sale, SEGA is offering some special discounts for the 25th anniversary of the Sonic the Hedgehog series. The original Sonic made its debut on Sega Genesis back in 1991, and SEGA is celebrating with discounts on a variety of Sonic games stretching from the classics all the way to more modern games like Sonic Generations and Sonic Lost World. You can check out the full list of games and discounts (valid until November 29th at 8:59 AM Pacific) below.